Bryant 312AAV L Series Service And Maintenance Procedures Manual Download | Manualshive

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© 2000 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231

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Printed in U.S.A.

SP0468

Catalog No. 5331-201

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Summary of Contents for 312AAV L Series

Page 1: ...nd the signal words DANGER WARNING CAUTION and NOTE These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WA...

Page 2: ...uum cleaners or other cleaning tools 2 Soap powders bleaches waxes or other cleaning compounds plastic or plastic containers gasoline kerosene cigarette lighter fluid dry cleaning fluids or other vola...

Page 3: ...furnace casing and away from blower compartment 8 Remove 2 screws holding blower assembly to blower deck and slide blower assembly out of furnace 9 Clean blower wheel and motor using a vacuum with so...

Page 4: ...y combustion air incorrect size or damaged manifold orifice s improper gas or a restricted heat exchanger Action must be taken to correct the problem If it becomes necessary to clean the heat exchange...

Page 5: ...proper operation 16 Verify blower airflow and speed changes between heating and cooling 17 Check for gas leaks WARNING Never use a match or other open flame to check for gas leaks Use a soap and wate...

Page 6: ...LED status 4 If furnace is operating properly and continuously lit LED indicates proper operation replace outer access door 5 Component Test can also be initiated by performing the following a Remove...

Page 7: ...nds 15 Blower off delay gas heating selections are 90 120 150 180 seconds cooling or heat pump 90 seconds or 5 seconds when DHUM is on LEGEND ACR AIR CONDITIONING RELAY SPST N O ACRDJ AIR CONDITIONING...

Page 8: ...omponent After replacing any component verify correct operation sequence Fig 8 Furnace Control A00380 LHT OFF DLY ON OFF W2 BLW 24 V THERMOSTAT TERMINALS SETUP SWITCHES LOW HEAT ONLY AND BLOWER OFF DE...

Page 9: ...for Short circuit in secondary voltage 24VAC wiring 31 HIGH HEAT PRESSURE SWITCH OR RELAY DID NOT CLOSE OR REOPENED Check for Control relay may be defective Refer to 32 32 LOW HEAT PRESSURE SWITCH DID...

Page 10: ...speed and run for the entire component test then shift to low speed for 10 seconds The HSI blower motor low heat speed blower motor high heat speed and blower motor cool speed will run for 10 15 sec e...

Page 11: ...PEN Check for Disconnected or obstructed pressure tubing Defective pressure switch 24 SECONDARY VOLTAGE FUSE IS OPEN Check for Short in low voltage wiring including thermostat leads shorting to ductwo...

Page 12: ...2000 Bryant Heating Cooling Systems 7310 W Morris St Indianapolis IN 46231 12 Printed in U S A SP0468 Catalog No 5331 201...

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